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  • Can someone help me with this, The charge on a capacitor plate in a circuit, as a function of time, is shown in the figure : What is the value of current at t = 4 s ?

 The charge on a capacitor plate in a circuit, as a function of time, is shown in the figure : 

What is the value of current at t = 4 s ?

 

  • Option 1)

    2 \mu A

  • Option 2)

     3 \mu A

  • Option 3)

    zero

  • Option 4)

    1.5 \mu A

Answers (1)

best_answer

 

Electric current -

I=\lim_{\Delta t\rightarrow 0}\frac{\Delta Q}{\Delta t}=\frac{dQ}{dt}

- wherein

I\rightarrow Instantaneous Current

\Delta t\rightarrow tends to zero

 

From graph

Slpoe of graph at t = 4 is zero and slpoe of graph = \frac{dq}{dt} and current = \frac{dq}{dt}

So \left ( \frac{dq}{dt} \right )_{t=4sec}= 0


Option 1)

2 \mu A

Option 2)

 3 \mu A

Option 3)

zero

Option 4)

1.5 \mu A

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